Improvement in dyeing textile fabrics with aniline colors



UNITED STATES PATENT OFFICE.

I. O. IVERSEN, OF MADISON, WISCONSIN.

IMPROVEMENT IN DY EING TEXTILE FABRICS WITH ANILINE COLORS.

Specification forming part of Letters Patent No. 83,502, dated October 27, 1868.

To all whom it may concern:

Be it known that I, I. O. IVERSEN, of the city of Madison, county of Dane, and in the State of Wisconsin, have invented a new and useful Improvement in the Mode of Dyeing I Textile Fabrics or Yarns; and I do hereby declare the following to be a full, clear, and exact description of the same.

My invention consists of a compound possessing the property of aniline colors in a far superior manner to others hitherto known, and at a much less expense than by the means now generally used; also, in the process of preparing the aniline color before it is used for dyeing purposes.

In order to enable others skilled in the art to make and use my improvement, I will proceed to describe its, operation.

The aniline color to be used for dyeing or printing purposes is pulverized and spread out on a smooth plane surface, (not metallic,) after being moistened by the application of hot water. It is kept out in the open air, or some dry place where there is plenty of light and air, for several days, until it is thoroughly dry.

After a quantity of aniline colorsay, one ounce-has undergone the above-stated process, it is dissolved in hot water-say, about half a gallon-and is then ready to be used in conjunction with the dyeing compound, which consists of, if one ounce of aniline color is to be used, three ounces of bichromate of potash; three ounces of alum; three ounces of soda-ash.

In this compound the fabric to be dyed is boiled for half an hour. Then clean water is poured into the vessel, and the aniline color is mixed with it. The textile fabric to be dyed is then to be put in this composition, and a quantity of about fifteen pounds of the fabric may be dyed in such composition. The fabric remains in the dye for about one hour, and the temperature is brought up to about 180 or 190.

I will state the advantages which I claim are gained by my invention. First, the dyed or printed fabric or yarn will not fade in the sunlight, nor be injured by exposure to rain, 85c. second, the fabric will rather improve in color by the application of soap, and by undergoing a hard scouring process third, the color obtained by my dyeing process is fast, glossy, and brilliant.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-- 1. The herein-described mode of treating aniline colors before they are dissolved in the dyeing compound.

2. The herein-described compound of bichromate of potash, alum, and soda'ash with an aniline color, substantially as and for the purpose sct forth.

In testimony whereof I have signedmy name to this specification in the presence of two subscribing witnesses.

I. O. IVERSEN.

Witnesses:

GEORGE E. WooDwARD, 011. H. BEYLER. 

